抄録
Recent studies on sand deposition problems of diversion dams in Japan have suggested that sand deposition near a diversion dam has a close relation to the formation of river channel bars. From this viewpoint, similar problems of diversion dams in Indonesia are analyzed.
The reason sand deposition blocks the intake entrance on the Katulampa Diversion Dam and the Mrican Diversion Dam is that a river channel bar is located in front of the entrance. It is feared that the same trouble will occur on the Colo Diversion Dam.
One can predict that a rubber dam will be unable to inflate because of sand deposition on the Jatimlerek Diversion Dam. This is easily seen by observing the pattern of river channel bars.
These studies have clarified the importance of choosing a favorable site for a dam and its intake on the basis of channel bar formation.
